Electrically conductive, black thermal control coatings for spacecraft application. I - Silicate matrix formulationThe formulation of the graphite silicate paints MH-11 and MH-11Z, which will serve as electrically conductive, heat-resistant thermal control coatings for the Galileo spacecraft's 400 Newton engine plume shield, 10 Newton thruster plume shields, and external shunt radiators, is described, and performance results for these paints are reported. The MH-11 is produced by combining a certain grade of graphite powder with a silicate base to produce a black, inorganic, electrically conductive, room temperature cure thermal control paint having high temperature capability. Zinc oxide is added to the MH-11 formulation to produce the blister resistant painta MH-11Z. The mechanical, chemical, thermal, optical, and radiation characteristics of the coatings are reported. The formulation, mixing, application, and surface preparation of the substrates are described, and a method of determining the electrical resistance of the coatings is demonstrated.
Document ID
19870025858
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bauer, J. L. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Odonnell, T. P. (California Institute of Technology Jet Propulsion Laboratory Pasadena, United States)
Hribar, V. F. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)